I know this topic has been discussed b4. Currently my car has 60K miles and I'm using Mobil 1 0W-40 but I want to switch to something better I was thinking Amsoil. My car as DCI and JB4. When I check the oil level its halfway and the oil was changed at 58,700 miles. I don't really see any smoke or any weird things the car feels good. I know the N54 is known for eating oil and running hottt!!!

Again, why bother trying aftermarket that may or may not be as good as the BMW spec oil? I get mine from the dealer, with the 10% discount I get for being a BMWCCA member, it works out to about $7.50/quart. If you are set on running 5w-40, the Motul suggested above might be worthwhile, since I don't know if the BMW oil comes in that weight.

A quick glance at the spec sheet for Motul 8100 X-Cess shows it is LL-01 approved, and not "recommended for cars requiring LL-01" or whatever the squishy language the not-really-independently-tested-to-spec oils also mentioned in this thread use. But it looks like it's around $8 a quart, without shipping (not sure what it would be locally, never looked).

Their spec sheet even includes this, which is a clue as to why the LL-01 approval is important:
"The BMW Long Life-01 specification imposes severe constraints to the lubricant particularly due to the Valvetronic system. It covers all BMW engines since 2001 and also all the previous BMW specifications such as BMW LL-98. BMW LL-01 standard covers also all Gasoline engines running only outside European Union countries, Switzerland, Norway and Liechtenstein. Refer to BMW recommendations when in doubt."

Again, why bother trying aftermarket that may or may not be as good as the BMW spec oil? I get mine from the dealer, with the 10% discount I get for being a BMWCCA member, it works out to about $7.50/quart. If you are set on running 5w-40, the Motul suggested above might be worthwhile, since I don't know if the BMW oil comes in that weight.

A quick glance at the spec sheet for Motul 8100 X-Cess shows it is LL-01 approved, not "recommended for cars requiring LL-01" or whatever the squishy language the not-really-independently-tested-to-spec oils use. But it looks like it's around $8 a quart, without shipping (not sure what it would be locally, never looked).

Their spec sheet even includes this, which is a clue as to why the LL-01 approval is important:
"The BMW Long Life-01 specification imposes severe constraints to the lubricant particularly due to the Valvetronic system. It covers all BMW engines since 2001 and also all the previous BMW specifications such as BMW LL-98. BMW LL-01 standard covers also all Gasoline engines running only outside European Union countries, Switzerland, Norway and Liechtenstein. Refer to BMW recommendations when in doubt."

Nice writeup...yea from reading the LL01 is for gas and LL04 is for disel. I will either go with Amsoil 5W40 Euro or the Motul 8100 X-Cess 5W40. Any other good stuff out there. I also read good reviews on Liqui Moly...

I'm using Motul 300v 5w-30 with apparently (no used oil analysis done by me) very good results. Car idles like clock with no hiccups, engine noise is reduced, overall the engine runs very nice. The downside is that you have to change it every 5000 miles, although I have seen oil analysis showing that it still had a good amount of additives (TBN) left after 5000 miles (even more than other normal oils).

The advantages of the 300v are its double ester base which is the best oil base available today, which means it provides top notch lubrication, it sticks to the metal surfaces even if car has not been used for a long time, and that it has a high HTHS value - this means that it maintains viscosity in extreme temperatures (150 Celsius) - good for the turbo environment.

I can definitely feel an overall improvement with this oil over the previous Castrol Edge 5w-30.

300V Motorsport Range, 8100 or 6100? Which oil should I choose?
Our 300V Motorsport range of lubricants are specifically formulated for racing applications. They are based around Motul’s unique ESTER Core® technology which combines the best performing synthetic base oils including esters with bespoke dedicated chemical additives.
The result is unrivalled power increase, outstanding lubrication and optimal protection, the best conditions for ultimate victory! These lubricants have been developed for leading Factory Racing Teams Worldwide, but also have exactly the same availability to the general public!

8100 is Motul’s top of the range passenger car engine oil based on 100% synthetic technology containing esters. These products meet the up to date and most demanding OEM engine oil approval requirements. 8100 lubricants are available in the latest and fuel-efficient 0W grades. 8100 lubricants are the safest way to keep your engine protected and operating the way it was designed to, fully compliant with the car’s warranty, whether it is in stop-and-start traffic or at full speed on the motorways.
6100 is based around Motul’s Technosynthese® technology containing esters. 6100 Products come with a multitude of official OEM approvals making sure you are using the right oil for your car. 6100 is designed to be price competitive without sacrificing on quality and performance. They are available in a wide range of popular viscosity grades.

I’m guessing the 8100 will last longer while the 300V is for high temp applications.

I'm using Motul 300v 5w-30 with apparently (no used oil analysis done by me) very good results. Car idles like clock with no hiccups, engine noise is reduced, overall the engine runs very nice. The downside is that you have to change it every 5000 miles, although I have seen oil analysis showing that it still had a good amount of additives (TBN) left after 5000 miles (even more than other normal oils).

The advantages of the 300v are its double ester base which is the best oil base available today, which means it provides top notch lubrication, it sticks to the metal surfaces even if car has not been used for a long time, and that it has a high HTHS value - this means that it maintains viscosity in extreme temperatures (150 Celsius) - good for the turbo environment.

I can definitely feel an overall improvement with this oil over the previous Castrol Edge 5w-30.

I am also using Motul 300W Power 5W40 (in my n54 335i, my wife F20 116i and my F10 M5). For diesel engine, Motul LL04 spec 5W40 or somethng from the 8100 line is suggested.

I can confirm what Cstavaru said: Motul 300V Power oils are the best of the best. May not last as the 8100 oils, but if you can afford the chnage your oil in every 5.000 - 8.000 km, than it is the best.